crashes due to use of Shell

[71628:71628:1029/133028.863497:FATAL:shell.cc(328)] Check failed: HasInstance(). 
#0 0x7f15ae538c1f base::debug::StackTrace::StackTrace()
#1 0x7f15ae46a43b logging::LogMessage::~LogMessage()
#2 0x7f15a65f9ac7 ash::Shell::GetPrimaryRootWindow()
#3 0x0000029da07f extensions::AutotestPrivateTakeScreenshotFunction::Run()
#4 0x0000020e1816 ExtensionFunction::RunWithValidation()
#5 0x0000020e3867 extensions::ExtensionFunctionDispatcher::DispatchWithCallbackInternal()
#6 0x0000020e3442 extensions::ExtensionFunctionDispatcher::Dispatch()
#7 0x0000021071ba extensions::ExtensionWebContentsObserver::OnRequest()
#8 0x000002107066 _ZN3IPC8MessageTI29ExtensionHostMsg_Request_MetaNSt3__15tupleIJ31ExtensionHostMsg_Request_ParamsEEEvE8DispatchIN10extensions28ExtensionWebContentsObserverES9_N7content15RenderFrameHostEMS9_FvPSB_RKS4_EEEbPKNS_7MessageEPT_PT0_PT1_T2_
#9 0x000002106fb2 extensions::ExtensionWebContentsObserver::OnMessageReceived()
#10 0x000003c6b701 extensions::ChromeExtensionWebContentsObserver::OnMessageReceived()
#11 0x7f15a9e4e0cf content::WebContentsImpl::OnMessageReceived()
#12 0x7f15a9ad9797 content::RenderFrameHostImpl::OnMessageReceived()
#13 0x7f15a9ceefbb content::RenderProcessHostImpl::OnMessageReceived()
#14 0x7f15aafe39d1 IPC::ChannelProxy::Context::OnDispatchMessage()
#15 0x7f15aafe62bb _ZN4base8internal7InvokerINS0_9BindStateIMN3IPC12ChannelProxy7ContextEFvRKNS3_7MessageEEJ13scoped_refptrIS5_ES6_EEEFvvEE3RunEPNS0_13BindStateBaseE
#16 0x7f15ae44d94a base::debug::TaskAnnotator::RunTask()
#17 0x7f15ae478dff base::MessageLoop::RunTask()
#18 0x7f15ae479233 base::MessageLoop::DoWork()
#19 0x7f15ae55c209 base::MessagePumpLibevent::Run()